Tes,
That's been around for some time now, I think about a year or so. Just sign up and print out your ID card, etc. Over on
www.railroadforums.com there's been, or was, a lot of comments about the subject. I think it boiled down to this. If you want to get your card and such, great, if you don't, you can still call in anything you see that doesn't look right and get the same reply/reponse. All that said, it's all up to you and what YOU want to do.

Later...